1 /* 2 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved. 3 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved. 4 * 5 * This software is available to you under a choice of one of two 6 * licenses. You may choose to be licensed under the terms of the GNU 7 * General Public License (GPL) Version 2, available from the file 8 * COPYING in the main directory of this source tree, or the 9 * OpenIB.org BSD license below: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * - Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 19 * - Redistributions in binary form must reproduce the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer in the documentation and/or other materials 22 * provided with the distribution. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31 * SOFTWARE. 32 */ 33 34 #include <linux/module.h> 35 #include <linux/init.h> 36 #include <linux/slab.h> 37 #include <linux/errno.h> 38 #include <linux/netdevice.h> 39 #include <linux/inetdevice.h> 40 #include <linux/rtnetlink.h> 41 #include <linux/if_vlan.h> 42 #include <net/ipv6.h> 43 #include <net/addrconf.h> 44 45 #include <rdma/ib_smi.h> 46 #include <rdma/ib_user_verbs.h> 47 #include <rdma/ib_addr.h> 48 49 #include <linux/mlx4/driver.h> 50 #include <linux/mlx4/cmd.h> 51 #include <linux/mlx4/qp.h> 52 53 #include "mlx4_ib.h" 54 #include "user.h" 55 56 #define DRV_NAME MLX4_IB_DRV_NAME 57 #define DRV_VERSION "2.2-1" 58 #define DRV_RELDATE "Feb 2014" 59 60 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF 61 #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF 62 63 MODULE_AUTHOR("Roland Dreier"); 64 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver"); 65 MODULE_LICENSE("Dual BSD/GPL"); 66 MODULE_VERSION(DRV_VERSION); 67 68 int mlx4_ib_sm_guid_assign = 1; 69 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444); 70 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 1)"); 71 72 static const char mlx4_ib_version[] = 73 DRV_NAME ": Mellanox ConnectX InfiniBand driver v" 74 DRV_VERSION " (" DRV_RELDATE ")\n"; 75 76 struct update_gid_work { 77 struct work_struct work; 78 union ib_gid gids[128]; 79 struct mlx4_ib_dev *dev; 80 int port; 81 }; 82 83 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init); 84 85 static struct workqueue_struct *wq; 86 87 static void init_query_mad(struct ib_smp *mad) 88 { 89 mad->base_version = 1; 90 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 91 mad->class_version = 1; 92 mad->method = IB_MGMT_METHOD_GET; 93 } 94 95 static union ib_gid zgid; 96 97 static int check_flow_steering_support(struct mlx4_dev *dev) 98 { 99 int eth_num_ports = 0; 100 int ib_num_ports = 0; 101 102 int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED; 103 104 if (dmfs) { 105 int i; 106 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) 107 eth_num_ports++; 108 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 109 ib_num_ports++; 110 dmfs &= (!ib_num_ports || 111 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) && 112 (!eth_num_ports || 113 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN)); 114 if (ib_num_ports && mlx4_is_mfunc(dev)) { 115 pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n"); 116 dmfs = 0; 117 } 118 } 119 return dmfs; 120 } 121 122 static int mlx4_ib_query_device(struct ib_device *ibdev, 123 struct ib_device_attr *props) 124 { 125 struct mlx4_ib_dev *dev = to_mdev(ibdev); 126 struct ib_smp *in_mad = NULL; 127 struct ib_smp *out_mad = NULL; 128 int err = -ENOMEM; 129 130 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 131 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 132 if (!in_mad || !out_mad) 133 goto out; 134 135 init_query_mad(in_mad); 136 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 137 138 err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS, 139 1, NULL, NULL, in_mad, out_mad); 140 if (err) 141 goto out; 142 143 memset(props, 0, sizeof *props); 144 145 props->fw_ver = dev->dev->caps.fw_ver; 146 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | 147 IB_DEVICE_PORT_ACTIVE_EVENT | 148 IB_DEVICE_SYS_IMAGE_GUID | 149 IB_DEVICE_RC_RNR_NAK_GEN | 150 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; 151 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR) 152 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; 153 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR) 154 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; 155 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM) 156 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; 157 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT) 158 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE; 159 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM) 160 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; 161 if (dev->dev->caps.max_gso_sz && dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH) 162 props->device_cap_flags |= IB_DEVICE_UD_TSO; 163 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY) 164 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY; 165 if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) && 166 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) && 167 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR)) 168 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 169 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) 170 props->device_cap_flags |= IB_DEVICE_XRC; 171 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW) 172 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW; 173 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) { 174 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B) 175 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B; 176 else 177 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A; 178 if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) 179 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING; 180 } 181 182 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) & 183 0xffffff; 184 props->vendor_part_id = dev->dev->pdev->device; 185 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32)); 186 memcpy(&props->sys_image_guid, out_mad->data + 4, 8); 187 188 props->max_mr_size = ~0ull; 189 props->page_size_cap = dev->dev->caps.page_size_cap; 190 props->max_qp = dev->dev->quotas.qp; 191 props->max_qp_wr = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE; 192 props->max_sge = min(dev->dev->caps.max_sq_sg, 193 dev->dev->caps.max_rq_sg); 194 props->max_cq = dev->dev->quotas.cq; 195 props->max_cqe = dev->dev->caps.max_cqes; 196 props->max_mr = dev->dev->quotas.mpt; 197 props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds; 198 props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma; 199 props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma; 200 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; 201 props->max_srq = dev->dev->quotas.srq; 202 props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1; 203 props->max_srq_sge = dev->dev->caps.max_srq_sge; 204 props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES; 205 props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay; 206 props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ? 207 IB_ATOMIC_HCA : IB_ATOMIC_NONE; 208 props->masked_atomic_cap = props->atomic_cap; 209 props->max_pkeys = dev->dev->caps.pkey_table_len[1]; 210 props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms; 211 props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm; 212 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * 213 props->max_mcast_grp; 214 props->max_map_per_fmr = dev->dev->caps.max_fmr_maps; 215 216 out: 217 kfree(in_mad); 218 kfree(out_mad); 219 220 return err; 221 } 222 223 static enum rdma_link_layer 224 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num) 225 { 226 struct mlx4_dev *dev = to_mdev(device)->dev; 227 228 return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ? 229 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET; 230 } 231 232 static int ib_link_query_port(struct ib_device *ibdev, u8 port, 233 struct ib_port_attr *props, int netw_view) 234 { 235 struct ib_smp *in_mad = NULL; 236 struct ib_smp *out_mad = NULL; 237 int ext_active_speed; 238 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 239 int err = -ENOMEM; 240 241 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 242 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 243 if (!in_mad || !out_mad) 244 goto out; 245 246 init_query_mad(in_mad); 247 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 248 in_mad->attr_mod = cpu_to_be32(port); 249 250 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view) 251 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 252 253 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 254 in_mad, out_mad); 255 if (err) 256 goto out; 257 258 259 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16)); 260 props->lmc = out_mad->data[34] & 0x7; 261 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18)); 262 props->sm_sl = out_mad->data[36] & 0xf; 263 props->state = out_mad->data[32] & 0xf; 264 props->phys_state = out_mad->data[33] >> 4; 265 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20)); 266 if (netw_view) 267 props->gid_tbl_len = out_mad->data[50]; 268 else 269 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port]; 270 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz; 271 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port]; 272 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46)); 273 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48)); 274 props->active_width = out_mad->data[31] & 0xf; 275 props->active_speed = out_mad->data[35] >> 4; 276 props->max_mtu = out_mad->data[41] & 0xf; 277 props->active_mtu = out_mad->data[36] >> 4; 278 props->subnet_timeout = out_mad->data[51] & 0x1f; 279 props->max_vl_num = out_mad->data[37] >> 4; 280 props->init_type_reply = out_mad->data[41] >> 4; 281 282 /* Check if extended speeds (EDR/FDR/...) are supported */ 283 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) { 284 ext_active_speed = out_mad->data[62] >> 4; 285 286 switch (ext_active_speed) { 287 case 1: 288 props->active_speed = IB_SPEED_FDR; 289 break; 290 case 2: 291 props->active_speed = IB_SPEED_EDR; 292 break; 293 } 294 } 295 296 /* If reported active speed is QDR, check if is FDR-10 */ 297 if (props->active_speed == IB_SPEED_QDR) { 298 init_query_mad(in_mad); 299 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO; 300 in_mad->attr_mod = cpu_to_be32(port); 301 302 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, 303 NULL, NULL, in_mad, out_mad); 304 if (err) 305 goto out; 306 307 /* Checking LinkSpeedActive for FDR-10 */ 308 if (out_mad->data[15] & 0x1) 309 props->active_speed = IB_SPEED_FDR10; 310 } 311 312 /* Avoid wrong speed value returned by FW if the IB link is down. */ 313 if (props->state == IB_PORT_DOWN) 314 props->active_speed = IB_SPEED_SDR; 315 316 out: 317 kfree(in_mad); 318 kfree(out_mad); 319 return err; 320 } 321 322 static u8 state_to_phys_state(enum ib_port_state state) 323 { 324 return state == IB_PORT_ACTIVE ? 5 : 3; 325 } 326 327 static int eth_link_query_port(struct ib_device *ibdev, u8 port, 328 struct ib_port_attr *props, int netw_view) 329 { 330 331 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 332 struct mlx4_ib_iboe *iboe = &mdev->iboe; 333 struct net_device *ndev; 334 enum ib_mtu tmp; 335 struct mlx4_cmd_mailbox *mailbox; 336 int err = 0; 337 338 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); 339 if (IS_ERR(mailbox)) 340 return PTR_ERR(mailbox); 341 342 err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0, 343 MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B, 344 MLX4_CMD_WRAPPED); 345 if (err) 346 goto out; 347 348 props->active_width = (((u8 *)mailbox->buf)[5] == 0x40) ? 349 IB_WIDTH_4X : IB_WIDTH_1X; 350 props->active_speed = IB_SPEED_QDR; 351 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_IP_BASED_GIDS; 352 props->gid_tbl_len = mdev->dev->caps.gid_table_len[port]; 353 props->max_msg_sz = mdev->dev->caps.max_msg_sz; 354 props->pkey_tbl_len = 1; 355 props->max_mtu = IB_MTU_4096; 356 props->max_vl_num = 2; 357 props->state = IB_PORT_DOWN; 358 props->phys_state = state_to_phys_state(props->state); 359 props->active_mtu = IB_MTU_256; 360 spin_lock(&iboe->lock); 361 ndev = iboe->netdevs[port - 1]; 362 if (!ndev) 363 goto out_unlock; 364 365 tmp = iboe_get_mtu(ndev->mtu); 366 props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256; 367 368 props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ? 369 IB_PORT_ACTIVE : IB_PORT_DOWN; 370 props->phys_state = state_to_phys_state(props->state); 371 out_unlock: 372 spin_unlock(&iboe->lock); 373 out: 374 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 375 return err; 376 } 377 378 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port, 379 struct ib_port_attr *props, int netw_view) 380 { 381 int err; 382 383 memset(props, 0, sizeof *props); 384 385 err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ? 386 ib_link_query_port(ibdev, port, props, netw_view) : 387 eth_link_query_port(ibdev, port, props, netw_view); 388 389 return err; 390 } 391 392 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port, 393 struct ib_port_attr *props) 394 { 395 /* returns host view */ 396 return __mlx4_ib_query_port(ibdev, port, props, 0); 397 } 398 399 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 400 union ib_gid *gid, int netw_view) 401 { 402 struct ib_smp *in_mad = NULL; 403 struct ib_smp *out_mad = NULL; 404 int err = -ENOMEM; 405 struct mlx4_ib_dev *dev = to_mdev(ibdev); 406 int clear = 0; 407 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 408 409 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 410 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 411 if (!in_mad || !out_mad) 412 goto out; 413 414 init_query_mad(in_mad); 415 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 416 in_mad->attr_mod = cpu_to_be32(port); 417 418 if (mlx4_is_mfunc(dev->dev) && netw_view) 419 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 420 421 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad); 422 if (err) 423 goto out; 424 425 memcpy(gid->raw, out_mad->data + 8, 8); 426 427 if (mlx4_is_mfunc(dev->dev) && !netw_view) { 428 if (index) { 429 /* For any index > 0, return the null guid */ 430 err = 0; 431 clear = 1; 432 goto out; 433 } 434 } 435 436 init_query_mad(in_mad); 437 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 438 in_mad->attr_mod = cpu_to_be32(index / 8); 439 440 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, 441 NULL, NULL, in_mad, out_mad); 442 if (err) 443 goto out; 444 445 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 446 447 out: 448 if (clear) 449 memset(gid->raw + 8, 0, 8); 450 kfree(in_mad); 451 kfree(out_mad); 452 return err; 453 } 454 455 static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index, 456 union ib_gid *gid) 457 { 458 struct mlx4_ib_dev *dev = to_mdev(ibdev); 459 460 *gid = dev->iboe.gid_table[port - 1][index]; 461 462 return 0; 463 } 464 465 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 466 union ib_gid *gid) 467 { 468 if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND) 469 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0); 470 else 471 return iboe_query_gid(ibdev, port, index, gid); 472 } 473 474 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 475 u16 *pkey, int netw_view) 476 { 477 struct ib_smp *in_mad = NULL; 478 struct ib_smp *out_mad = NULL; 479 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 480 int err = -ENOMEM; 481 482 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 483 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 484 if (!in_mad || !out_mad) 485 goto out; 486 487 init_query_mad(in_mad); 488 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 489 in_mad->attr_mod = cpu_to_be32(index / 32); 490 491 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view) 492 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 493 494 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 495 in_mad, out_mad); 496 if (err) 497 goto out; 498 499 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]); 500 501 out: 502 kfree(in_mad); 503 kfree(out_mad); 504 return err; 505 } 506 507 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) 508 { 509 return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0); 510 } 511 512 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask, 513 struct ib_device_modify *props) 514 { 515 struct mlx4_cmd_mailbox *mailbox; 516 unsigned long flags; 517 518 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 519 return -EOPNOTSUPP; 520 521 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC)) 522 return 0; 523 524 if (mlx4_is_slave(to_mdev(ibdev)->dev)) 525 return -EOPNOTSUPP; 526 527 spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags); 528 memcpy(ibdev->node_desc, props->node_desc, 64); 529 spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags); 530 531 /* 532 * If possible, pass node desc to FW, so it can generate 533 * a 144 trap. If cmd fails, just ignore. 534 */ 535 mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev); 536 if (IS_ERR(mailbox)) 537 return 0; 538 539 memcpy(mailbox->buf, props->node_desc, 64); 540 mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0, 541 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE); 542 543 mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox); 544 545 return 0; 546 } 547 548 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols, 549 u32 cap_mask) 550 { 551 struct mlx4_cmd_mailbox *mailbox; 552 int err; 553 u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH; 554 555 mailbox = mlx4_alloc_cmd_mailbox(dev->dev); 556 if (IS_ERR(mailbox)) 557 return PTR_ERR(mailbox); 558 559 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) { 560 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6; 561 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask); 562 } else { 563 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols; 564 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask); 565 } 566 567 err = mlx4_cmd(dev->dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT, 568 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE); 569 570 mlx4_free_cmd_mailbox(dev->dev, mailbox); 571 return err; 572 } 573 574 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, 575 struct ib_port_modify *props) 576 { 577 struct ib_port_attr attr; 578 u32 cap_mask; 579 int err; 580 581 mutex_lock(&to_mdev(ibdev)->cap_mask_mutex); 582 583 err = mlx4_ib_query_port(ibdev, port, &attr); 584 if (err) 585 goto out; 586 587 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & 588 ~props->clr_port_cap_mask; 589 590 err = mlx4_SET_PORT(to_mdev(ibdev), port, 591 !!(mask & IB_PORT_RESET_QKEY_CNTR), 592 cap_mask); 593 594 out: 595 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 596 return err; 597 } 598 599 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev, 600 struct ib_udata *udata) 601 { 602 struct mlx4_ib_dev *dev = to_mdev(ibdev); 603 struct mlx4_ib_ucontext *context; 604 struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3; 605 struct mlx4_ib_alloc_ucontext_resp resp; 606 int err; 607 608 if (!dev->ib_active) 609 return ERR_PTR(-EAGAIN); 610 611 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) { 612 resp_v3.qp_tab_size = dev->dev->caps.num_qps; 613 resp_v3.bf_reg_size = dev->dev->caps.bf_reg_size; 614 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 615 } else { 616 resp.dev_caps = dev->dev->caps.userspace_caps; 617 resp.qp_tab_size = dev->dev->caps.num_qps; 618 resp.bf_reg_size = dev->dev->caps.bf_reg_size; 619 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 620 resp.cqe_size = dev->dev->caps.cqe_size; 621 } 622 623 context = kmalloc(sizeof *context, GFP_KERNEL); 624 if (!context) 625 return ERR_PTR(-ENOMEM); 626 627 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar); 628 if (err) { 629 kfree(context); 630 return ERR_PTR(err); 631 } 632 633 INIT_LIST_HEAD(&context->db_page_list); 634 mutex_init(&context->db_page_mutex); 635 636 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) 637 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3)); 638 else 639 err = ib_copy_to_udata(udata, &resp, sizeof(resp)); 640 641 if (err) { 642 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar); 643 kfree(context); 644 return ERR_PTR(-EFAULT); 645 } 646 647 return &context->ibucontext; 648 } 649 650 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 651 { 652 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext); 653 654 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar); 655 kfree(context); 656 657 return 0; 658 } 659 660 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 661 { 662 struct mlx4_ib_dev *dev = to_mdev(context->device); 663 664 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 665 return -EINVAL; 666 667 if (vma->vm_pgoff == 0) { 668 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 669 670 if (io_remap_pfn_range(vma, vma->vm_start, 671 to_mucontext(context)->uar.pfn, 672 PAGE_SIZE, vma->vm_page_prot)) 673 return -EAGAIN; 674 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) { 675 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); 676 677 if (io_remap_pfn_range(vma, vma->vm_start, 678 to_mucontext(context)->uar.pfn + 679 dev->dev->caps.num_uars, 680 PAGE_SIZE, vma->vm_page_prot)) 681 return -EAGAIN; 682 } else 683 return -EINVAL; 684 685 return 0; 686 } 687 688 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev, 689 struct ib_ucontext *context, 690 struct ib_udata *udata) 691 { 692 struct mlx4_ib_pd *pd; 693 int err; 694 695 pd = kmalloc(sizeof *pd, GFP_KERNEL); 696 if (!pd) 697 return ERR_PTR(-ENOMEM); 698 699 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn); 700 if (err) { 701 kfree(pd); 702 return ERR_PTR(err); 703 } 704 705 if (context) 706 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) { 707 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn); 708 kfree(pd); 709 return ERR_PTR(-EFAULT); 710 } 711 712 return &pd->ibpd; 713 } 714 715 static int mlx4_ib_dealloc_pd(struct ib_pd *pd) 716 { 717 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn); 718 kfree(pd); 719 720 return 0; 721 } 722 723 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev, 724 struct ib_ucontext *context, 725 struct ib_udata *udata) 726 { 727 struct mlx4_ib_xrcd *xrcd; 728 int err; 729 730 if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)) 731 return ERR_PTR(-ENOSYS); 732 733 xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL); 734 if (!xrcd) 735 return ERR_PTR(-ENOMEM); 736 737 err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn); 738 if (err) 739 goto err1; 740 741 xrcd->pd = ib_alloc_pd(ibdev); 742 if (IS_ERR(xrcd->pd)) { 743 err = PTR_ERR(xrcd->pd); 744 goto err2; 745 } 746 747 xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0); 748 if (IS_ERR(xrcd->cq)) { 749 err = PTR_ERR(xrcd->cq); 750 goto err3; 751 } 752 753 return &xrcd->ibxrcd; 754 755 err3: 756 ib_dealloc_pd(xrcd->pd); 757 err2: 758 mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn); 759 err1: 760 kfree(xrcd); 761 return ERR_PTR(err); 762 } 763 764 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd) 765 { 766 ib_destroy_cq(to_mxrcd(xrcd)->cq); 767 ib_dealloc_pd(to_mxrcd(xrcd)->pd); 768 mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn); 769 kfree(xrcd); 770 771 return 0; 772 } 773 774 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid) 775 { 776 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 777 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 778 struct mlx4_ib_gid_entry *ge; 779 780 ge = kzalloc(sizeof *ge, GFP_KERNEL); 781 if (!ge) 782 return -ENOMEM; 783 784 ge->gid = *gid; 785 if (mlx4_ib_add_mc(mdev, mqp, gid)) { 786 ge->port = mqp->port; 787 ge->added = 1; 788 } 789 790 mutex_lock(&mqp->mutex); 791 list_add_tail(&ge->list, &mqp->gid_list); 792 mutex_unlock(&mqp->mutex); 793 794 return 0; 795 } 796 797 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 798 union ib_gid *gid) 799 { 800 struct net_device *ndev; 801 int ret = 0; 802 803 if (!mqp->port) 804 return 0; 805 806 spin_lock(&mdev->iboe.lock); 807 ndev = mdev->iboe.netdevs[mqp->port - 1]; 808 if (ndev) 809 dev_hold(ndev); 810 spin_unlock(&mdev->iboe.lock); 811 812 if (ndev) { 813 ret = 1; 814 dev_put(ndev); 815 } 816 817 return ret; 818 } 819 820 struct mlx4_ib_steering { 821 struct list_head list; 822 u64 reg_id; 823 union ib_gid gid; 824 }; 825 826 static int parse_flow_attr(struct mlx4_dev *dev, 827 u32 qp_num, 828 union ib_flow_spec *ib_spec, 829 struct _rule_hw *mlx4_spec) 830 { 831 enum mlx4_net_trans_rule_id type; 832 833 switch (ib_spec->type) { 834 case IB_FLOW_SPEC_ETH: 835 type = MLX4_NET_TRANS_RULE_ID_ETH; 836 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac, 837 ETH_ALEN); 838 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac, 839 ETH_ALEN); 840 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag; 841 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag; 842 break; 843 case IB_FLOW_SPEC_IB: 844 type = MLX4_NET_TRANS_RULE_ID_IB; 845 mlx4_spec->ib.l3_qpn = 846 cpu_to_be32(qp_num); 847 mlx4_spec->ib.qpn_mask = 848 cpu_to_be32(MLX4_IB_FLOW_QPN_MASK); 849 break; 850 851 852 case IB_FLOW_SPEC_IPV4: 853 type = MLX4_NET_TRANS_RULE_ID_IPV4; 854 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip; 855 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip; 856 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip; 857 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip; 858 break; 859 860 case IB_FLOW_SPEC_TCP: 861 case IB_FLOW_SPEC_UDP: 862 type = ib_spec->type == IB_FLOW_SPEC_TCP ? 863 MLX4_NET_TRANS_RULE_ID_TCP : 864 MLX4_NET_TRANS_RULE_ID_UDP; 865 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port; 866 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port; 867 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port; 868 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port; 869 break; 870 871 default: 872 return -EINVAL; 873 } 874 if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 || 875 mlx4_hw_rule_sz(dev, type) < 0) 876 return -EINVAL; 877 mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type)); 878 mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2; 879 return mlx4_hw_rule_sz(dev, type); 880 } 881 882 struct default_rules { 883 __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS]; 884 __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS]; 885 __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS]; 886 __u8 link_layer; 887 }; 888 static const struct default_rules default_table[] = { 889 { 890 .mandatory_fields = {IB_FLOW_SPEC_IPV4}, 891 .mandatory_not_fields = {IB_FLOW_SPEC_ETH}, 892 .rules_create_list = {IB_FLOW_SPEC_IB}, 893 .link_layer = IB_LINK_LAYER_INFINIBAND 894 } 895 }; 896 897 static int __mlx4_ib_default_rules_match(struct ib_qp *qp, 898 struct ib_flow_attr *flow_attr) 899 { 900 int i, j, k; 901 void *ib_flow; 902 const struct default_rules *pdefault_rules = default_table; 903 u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port); 904 905 for (i = 0; i < sizeof(default_table)/sizeof(default_table[0]); i++, 906 pdefault_rules++) { 907 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS]; 908 memset(&field_types, 0, sizeof(field_types)); 909 910 if (link_layer != pdefault_rules->link_layer) 911 continue; 912 913 ib_flow = flow_attr + 1; 914 /* we assume the specs are sorted */ 915 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS && 916 j < flow_attr->num_of_specs; k++) { 917 union ib_flow_spec *current_flow = 918 (union ib_flow_spec *)ib_flow; 919 920 /* same layer but different type */ 921 if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) == 922 (pdefault_rules->mandatory_fields[k] & 923 IB_FLOW_SPEC_LAYER_MASK)) && 924 (current_flow->type != 925 pdefault_rules->mandatory_fields[k])) 926 goto out; 927 928 /* same layer, try match next one */ 929 if (current_flow->type == 930 pdefault_rules->mandatory_fields[k]) { 931 j++; 932 ib_flow += 933 ((union ib_flow_spec *)ib_flow)->size; 934 } 935 } 936 937 ib_flow = flow_attr + 1; 938 for (j = 0; j < flow_attr->num_of_specs; 939 j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size) 940 for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++) 941 /* same layer and same type */ 942 if (((union ib_flow_spec *)ib_flow)->type == 943 pdefault_rules->mandatory_not_fields[k]) 944 goto out; 945 946 return i; 947 } 948 out: 949 return -1; 950 } 951 952 static int __mlx4_ib_create_default_rules( 953 struct mlx4_ib_dev *mdev, 954 struct ib_qp *qp, 955 const struct default_rules *pdefault_rules, 956 struct _rule_hw *mlx4_spec) { 957 int size = 0; 958 int i; 959 960 for (i = 0; i < sizeof(pdefault_rules->rules_create_list)/ 961 sizeof(pdefault_rules->rules_create_list[0]); i++) { 962 int ret; 963 union ib_flow_spec ib_spec; 964 switch (pdefault_rules->rules_create_list[i]) { 965 case 0: 966 /* no rule */ 967 continue; 968 case IB_FLOW_SPEC_IB: 969 ib_spec.type = IB_FLOW_SPEC_IB; 970 ib_spec.size = sizeof(struct ib_flow_spec_ib); 971 972 break; 973 default: 974 /* invalid rule */ 975 return -EINVAL; 976 } 977 /* We must put empty rule, qpn is being ignored */ 978 ret = parse_flow_attr(mdev->dev, 0, &ib_spec, 979 mlx4_spec); 980 if (ret < 0) { 981 pr_info("invalid parsing\n"); 982 return -EINVAL; 983 } 984 985 mlx4_spec = (void *)mlx4_spec + ret; 986 size += ret; 987 } 988 return size; 989 } 990 991 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr, 992 int domain, 993 enum mlx4_net_trans_promisc_mode flow_type, 994 u64 *reg_id) 995 { 996 int ret, i; 997 int size = 0; 998 void *ib_flow; 999 struct mlx4_ib_dev *mdev = to_mdev(qp->device); 1000 struct mlx4_cmd_mailbox *mailbox; 1001 struct mlx4_net_trans_rule_hw_ctrl *ctrl; 1002 int default_flow; 1003 1004 static const u16 __mlx4_domain[] = { 1005 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS, 1006 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL, 1007 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS, 1008 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC, 1009 }; 1010 1011 if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) { 1012 pr_err("Invalid priority value %d\n", flow_attr->priority); 1013 return -EINVAL; 1014 } 1015 1016 if (domain >= IB_FLOW_DOMAIN_NUM) { 1017 pr_err("Invalid domain value %d\n", domain); 1018 return -EINVAL; 1019 } 1020 1021 if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0) 1022 return -EINVAL; 1023 1024 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); 1025 if (IS_ERR(mailbox)) 1026 return PTR_ERR(mailbox); 1027 ctrl = mailbox->buf; 1028 1029 ctrl->prio = cpu_to_be16(__mlx4_domain[domain] | 1030 flow_attr->priority); 1031 ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type); 1032 ctrl->port = flow_attr->port; 1033 ctrl->qpn = cpu_to_be32(qp->qp_num); 1034 1035 ib_flow = flow_attr + 1; 1036 size += sizeof(struct mlx4_net_trans_rule_hw_ctrl); 1037 /* Add default flows */ 1038 default_flow = __mlx4_ib_default_rules_match(qp, flow_attr); 1039 if (default_flow >= 0) { 1040 ret = __mlx4_ib_create_default_rules( 1041 mdev, qp, default_table + default_flow, 1042 mailbox->buf + size); 1043 if (ret < 0) { 1044 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1045 return -EINVAL; 1046 } 1047 size += ret; 1048 } 1049 for (i = 0; i < flow_attr->num_of_specs; i++) { 1050 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow, 1051 mailbox->buf + size); 1052 if (ret < 0) { 1053 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1054 return -EINVAL; 1055 } 1056 ib_flow += ((union ib_flow_spec *) ib_flow)->size; 1057 size += ret; 1058 } 1059 1060 ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0, 1061 MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A, 1062 MLX4_CMD_NATIVE); 1063 if (ret == -ENOMEM) 1064 pr_err("mcg table is full. Fail to register network rule.\n"); 1065 else if (ret == -ENXIO) 1066 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n"); 1067 else if (ret) 1068 pr_err("Invalid argumant. Fail to register network rule.\n"); 1069 1070 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1071 return ret; 1072 } 1073 1074 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id) 1075 { 1076 int err; 1077 err = mlx4_cmd(dev, reg_id, 0, 0, 1078 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A, 1079 MLX4_CMD_NATIVE); 1080 if (err) 1081 pr_err("Fail to detach network rule. registration id = 0x%llx\n", 1082 reg_id); 1083 return err; 1084 } 1085 1086 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp, 1087 struct ib_flow_attr *flow_attr, 1088 int domain) 1089 { 1090 int err = 0, i = 0; 1091 struct mlx4_ib_flow *mflow; 1092 enum mlx4_net_trans_promisc_mode type[2]; 1093 1094 memset(type, 0, sizeof(type)); 1095 1096 mflow = kzalloc(sizeof(*mflow), GFP_KERNEL); 1097 if (!mflow) { 1098 err = -ENOMEM; 1099 goto err_free; 1100 } 1101 1102 switch (flow_attr->type) { 1103 case IB_FLOW_ATTR_NORMAL: 1104 type[0] = MLX4_FS_REGULAR; 1105 break; 1106 1107 case IB_FLOW_ATTR_ALL_DEFAULT: 1108 type[0] = MLX4_FS_ALL_DEFAULT; 1109 break; 1110 1111 case IB_FLOW_ATTR_MC_DEFAULT: 1112 type[0] = MLX4_FS_MC_DEFAULT; 1113 break; 1114 1115 case IB_FLOW_ATTR_SNIFFER: 1116 type[0] = MLX4_FS_UC_SNIFFER; 1117 type[1] = MLX4_FS_MC_SNIFFER; 1118 break; 1119 1120 default: 1121 err = -EINVAL; 1122 goto err_free; 1123 } 1124 1125 while (i < ARRAY_SIZE(type) && type[i]) { 1126 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i], 1127 &mflow->reg_id[i]); 1128 if (err) 1129 goto err_free; 1130 i++; 1131 } 1132 1133 return &mflow->ibflow; 1134 1135 err_free: 1136 kfree(mflow); 1137 return ERR_PTR(err); 1138 } 1139 1140 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id) 1141 { 1142 int err, ret = 0; 1143 int i = 0; 1144 struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device); 1145 struct mlx4_ib_flow *mflow = to_mflow(flow_id); 1146 1147 while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i]) { 1148 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i]); 1149 if (err) 1150 ret = err; 1151 i++; 1152 } 1153 1154 kfree(mflow); 1155 return ret; 1156 } 1157 1158 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1159 { 1160 int err; 1161 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1162 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1163 u64 reg_id; 1164 struct mlx4_ib_steering *ib_steering = NULL; 1165 enum mlx4_protocol prot = (gid->raw[1] == 0x0e) ? 1166 MLX4_PROT_IB_IPV4 : MLX4_PROT_IB_IPV6; 1167 1168 if (mdev->dev->caps.steering_mode == 1169 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1170 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL); 1171 if (!ib_steering) 1172 return -ENOMEM; 1173 } 1174 1175 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port, 1176 !!(mqp->flags & 1177 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), 1178 prot, ®_id); 1179 if (err) 1180 goto err_malloc; 1181 1182 err = add_gid_entry(ibqp, gid); 1183 if (err) 1184 goto err_add; 1185 1186 if (ib_steering) { 1187 memcpy(ib_steering->gid.raw, gid->raw, 16); 1188 ib_steering->reg_id = reg_id; 1189 mutex_lock(&mqp->mutex); 1190 list_add(&ib_steering->list, &mqp->steering_rules); 1191 mutex_unlock(&mqp->mutex); 1192 } 1193 return 0; 1194 1195 err_add: 1196 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1197 prot, reg_id); 1198 err_malloc: 1199 kfree(ib_steering); 1200 1201 return err; 1202 } 1203 1204 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw) 1205 { 1206 struct mlx4_ib_gid_entry *ge; 1207 struct mlx4_ib_gid_entry *tmp; 1208 struct mlx4_ib_gid_entry *ret = NULL; 1209 1210 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { 1211 if (!memcmp(raw, ge->gid.raw, 16)) { 1212 ret = ge; 1213 break; 1214 } 1215 } 1216 1217 return ret; 1218 } 1219 1220 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1221 { 1222 int err; 1223 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1224 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1225 struct net_device *ndev; 1226 struct mlx4_ib_gid_entry *ge; 1227 u64 reg_id = 0; 1228 enum mlx4_protocol prot = (gid->raw[1] == 0x0e) ? 1229 MLX4_PROT_IB_IPV4 : MLX4_PROT_IB_IPV6; 1230 1231 if (mdev->dev->caps.steering_mode == 1232 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1233 struct mlx4_ib_steering *ib_steering; 1234 1235 mutex_lock(&mqp->mutex); 1236 list_for_each_entry(ib_steering, &mqp->steering_rules, list) { 1237 if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) { 1238 list_del(&ib_steering->list); 1239 break; 1240 } 1241 } 1242 mutex_unlock(&mqp->mutex); 1243 if (&ib_steering->list == &mqp->steering_rules) { 1244 pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n"); 1245 return -EINVAL; 1246 } 1247 reg_id = ib_steering->reg_id; 1248 kfree(ib_steering); 1249 } 1250 1251 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1252 prot, reg_id); 1253 if (err) 1254 return err; 1255 1256 mutex_lock(&mqp->mutex); 1257 ge = find_gid_entry(mqp, gid->raw); 1258 if (ge) { 1259 spin_lock(&mdev->iboe.lock); 1260 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL; 1261 if (ndev) 1262 dev_hold(ndev); 1263 spin_unlock(&mdev->iboe.lock); 1264 if (ndev) 1265 dev_put(ndev); 1266 list_del(&ge->list); 1267 kfree(ge); 1268 } else 1269 pr_warn("could not find mgid entry\n"); 1270 1271 mutex_unlock(&mqp->mutex); 1272 1273 return 0; 1274 } 1275 1276 static int init_node_data(struct mlx4_ib_dev *dev) 1277 { 1278 struct ib_smp *in_mad = NULL; 1279 struct ib_smp *out_mad = NULL; 1280 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 1281 int err = -ENOMEM; 1282 1283 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 1284 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 1285 if (!in_mad || !out_mad) 1286 goto out; 1287 1288 init_query_mad(in_mad); 1289 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 1290 if (mlx4_is_master(dev->dev)) 1291 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 1292 1293 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 1294 if (err) 1295 goto out; 1296 1297 memcpy(dev->ib_dev.node_desc, out_mad->data, 64); 1298 1299 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 1300 1301 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 1302 if (err) 1303 goto out; 1304 1305 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32)); 1306 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 1307 1308 out: 1309 kfree(in_mad); 1310 kfree(out_mad); 1311 return err; 1312 } 1313 1314 static ssize_t show_hca(struct device *device, struct device_attribute *attr, 1315 char *buf) 1316 { 1317 struct mlx4_ib_dev *dev = 1318 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1319 return sprintf(buf, "MT%d\n", dev->dev->pdev->device); 1320 } 1321 1322 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, 1323 char *buf) 1324 { 1325 struct mlx4_ib_dev *dev = 1326 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1327 return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32), 1328 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff, 1329 (int) dev->dev->caps.fw_ver & 0xffff); 1330 } 1331 1332 static ssize_t show_rev(struct device *device, struct device_attribute *attr, 1333 char *buf) 1334 { 1335 struct mlx4_ib_dev *dev = 1336 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1337 return sprintf(buf, "%x\n", dev->dev->rev_id); 1338 } 1339 1340 static ssize_t show_board(struct device *device, struct device_attribute *attr, 1341 char *buf) 1342 { 1343 struct mlx4_ib_dev *dev = 1344 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1345 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN, 1346 dev->dev->board_id); 1347 } 1348 1349 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 1350 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 1351 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 1352 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 1353 1354 static struct device_attribute *mlx4_class_attributes[] = { 1355 &dev_attr_hw_rev, 1356 &dev_attr_fw_ver, 1357 &dev_attr_hca_type, 1358 &dev_attr_board_id 1359 }; 1360 1361 static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, 1362 struct net_device *dev) 1363 { 1364 memcpy(eui, dev->dev_addr, 3); 1365 memcpy(eui + 5, dev->dev_addr + 3, 3); 1366 if (vlan_id < 0x1000) { 1367 eui[3] = vlan_id >> 8; 1368 eui[4] = vlan_id & 0xff; 1369 } else { 1370 eui[3] = 0xff; 1371 eui[4] = 0xfe; 1372 } 1373 eui[0] ^= 2; 1374 } 1375 1376 static void update_gids_task(struct work_struct *work) 1377 { 1378 struct update_gid_work *gw = container_of(work, struct update_gid_work, work); 1379 struct mlx4_cmd_mailbox *mailbox; 1380 union ib_gid *gids; 1381 int err; 1382 struct mlx4_dev *dev = gw->dev->dev; 1383 1384 mailbox = mlx4_alloc_cmd_mailbox(dev); 1385 if (IS_ERR(mailbox)) { 1386 pr_warn("update gid table failed %ld\n", PTR_ERR(mailbox)); 1387 return; 1388 } 1389 1390 gids = mailbox->buf; 1391 memcpy(gids, gw->gids, sizeof gw->gids); 1392 1393 err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port, 1394 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 1395 MLX4_CMD_WRAPPED); 1396 if (err) 1397 pr_warn("set port command failed\n"); 1398 else 1399 mlx4_ib_dispatch_event(gw->dev, gw->port, IB_EVENT_GID_CHANGE); 1400 1401 mlx4_free_cmd_mailbox(dev, mailbox); 1402 kfree(gw); 1403 } 1404 1405 static void reset_gids_task(struct work_struct *work) 1406 { 1407 struct update_gid_work *gw = 1408 container_of(work, struct update_gid_work, work); 1409 struct mlx4_cmd_mailbox *mailbox; 1410 union ib_gid *gids; 1411 int err; 1412 struct mlx4_dev *dev = gw->dev->dev; 1413 1414 mailbox = mlx4_alloc_cmd_mailbox(dev); 1415 if (IS_ERR(mailbox)) { 1416 pr_warn("reset gid table failed\n"); 1417 goto free; 1418 } 1419 1420 gids = mailbox->buf; 1421 memcpy(gids, gw->gids, sizeof(gw->gids)); 1422 1423 if (mlx4_ib_port_link_layer(&gw->dev->ib_dev, gw->port) == 1424 IB_LINK_LAYER_ETHERNET) { 1425 err = mlx4_cmd(dev, mailbox->dma, 1426 MLX4_SET_PORT_GID_TABLE << 8 | gw->port, 1427 1, MLX4_CMD_SET_PORT, 1428 MLX4_CMD_TIME_CLASS_B, 1429 MLX4_CMD_WRAPPED); 1430 if (err) 1431 pr_warn(KERN_WARNING 1432 "set port %d command failed\n", gw->port); 1433 } 1434 1435 mlx4_free_cmd_mailbox(dev, mailbox); 1436 free: 1437 kfree(gw); 1438 } 1439 1440 static int update_gid_table(struct mlx4_ib_dev *dev, int port, 1441 union ib_gid *gid, int clear, 1442 int default_gid) 1443 { 1444 struct update_gid_work *work; 1445 int i; 1446 int need_update = 0; 1447 int free = -1; 1448 int found = -1; 1449 int max_gids; 1450 1451 if (default_gid) { 1452 free = 0; 1453 } else { 1454 max_gids = dev->dev->caps.gid_table_len[port]; 1455 for (i = 1; i < max_gids; ++i) { 1456 if (!memcmp(&dev->iboe.gid_table[port - 1][i], gid, 1457 sizeof(*gid))) 1458 found = i; 1459 1460 if (clear) { 1461 if (found >= 0) { 1462 need_update = 1; 1463 dev->iboe.gid_table[port - 1][found] = 1464 zgid; 1465 break; 1466 } 1467 } else { 1468 if (found >= 0) 1469 break; 1470 1471 if (free < 0 && 1472 !memcmp(&dev->iboe.gid_table[port - 1][i], 1473 &zgid, sizeof(*gid))) 1474 free = i; 1475 } 1476 } 1477 } 1478 1479 if (found == -1 && !clear && free >= 0) { 1480 dev->iboe.gid_table[port - 1][free] = *gid; 1481 need_update = 1; 1482 } 1483 1484 if (!need_update) 1485 return 0; 1486 1487 work = kzalloc(sizeof(*work), GFP_ATOMIC); 1488 if (!work) 1489 return -ENOMEM; 1490 1491 memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof(work->gids)); 1492 INIT_WORK(&work->work, update_gids_task); 1493 work->port = port; 1494 work->dev = dev; 1495 queue_work(wq, &work->work); 1496 1497 return 0; 1498 } 1499 1500 static void mlx4_make_default_gid(struct net_device *dev, union ib_gid *gid) 1501 { 1502 gid->global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL); 1503 mlx4_addrconf_ifid_eui48(&gid->raw[8], 0xffff, dev); 1504 } 1505 1506 1507 static int reset_gid_table(struct mlx4_ib_dev *dev, u8 port) 1508 { 1509 struct update_gid_work *work; 1510 1511 work = kzalloc(sizeof(*work), GFP_ATOMIC); 1512 if (!work) 1513 return -ENOMEM; 1514 1515 memset(dev->iboe.gid_table[port - 1], 0, sizeof(work->gids)); 1516 memset(work->gids, 0, sizeof(work->gids)); 1517 INIT_WORK(&work->work, reset_gids_task); 1518 work->dev = dev; 1519 work->port = port; 1520 queue_work(wq, &work->work); 1521 return 0; 1522 } 1523 1524 static int mlx4_ib_addr_event(int event, struct net_device *event_netdev, 1525 struct mlx4_ib_dev *ibdev, union ib_gid *gid) 1526 { 1527 struct mlx4_ib_iboe *iboe; 1528 int port = 0; 1529 struct net_device *real_dev = rdma_vlan_dev_real_dev(event_netdev) ? 1530 rdma_vlan_dev_real_dev(event_netdev) : 1531 event_netdev; 1532 union ib_gid default_gid; 1533 1534 mlx4_make_default_gid(real_dev, &default_gid); 1535 1536 if (!memcmp(gid, &default_gid, sizeof(*gid))) 1537 return 0; 1538 1539 if (event != NETDEV_DOWN && event != NETDEV_UP) 1540 return 0; 1541 1542 if ((real_dev != event_netdev) && 1543 (event == NETDEV_DOWN) && 1544 rdma_link_local_addr((struct in6_addr *)gid)) 1545 return 0; 1546 1547 iboe = &ibdev->iboe; 1548 spin_lock(&iboe->lock); 1549 1550 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) 1551 if ((netif_is_bond_master(real_dev) && 1552 (real_dev == iboe->masters[port - 1])) || 1553 (!netif_is_bond_master(real_dev) && 1554 (real_dev == iboe->netdevs[port - 1]))) 1555 update_gid_table(ibdev, port, gid, 1556 event == NETDEV_DOWN, 0); 1557 1558 spin_unlock(&iboe->lock); 1559 return 0; 1560 1561 } 1562 1563 static u8 mlx4_ib_get_dev_port(struct net_device *dev, 1564 struct mlx4_ib_dev *ibdev) 1565 { 1566 u8 port = 0; 1567 struct mlx4_ib_iboe *iboe; 1568 struct net_device *real_dev = rdma_vlan_dev_real_dev(dev) ? 1569 rdma_vlan_dev_real_dev(dev) : dev; 1570 1571 iboe = &ibdev->iboe; 1572 1573 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) 1574 if ((netif_is_bond_master(real_dev) && 1575 (real_dev == iboe->masters[port - 1])) || 1576 (!netif_is_bond_master(real_dev) && 1577 (real_dev == iboe->netdevs[port - 1]))) 1578 break; 1579 1580 if ((port == 0) || (port > ibdev->dev->caps.num_ports)) 1581 return 0; 1582 else 1583 return port; 1584 } 1585 1586 static int mlx4_ib_inet_event(struct notifier_block *this, unsigned long event, 1587 void *ptr) 1588 { 1589 struct mlx4_ib_dev *ibdev; 1590 struct in_ifaddr *ifa = ptr; 1591 union ib_gid gid; 1592 struct net_device *event_netdev = ifa->ifa_dev->dev; 1593 1594 ipv6_addr_set_v4mapped(ifa->ifa_address, (struct in6_addr *)&gid); 1595 1596 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb_inet); 1597 1598 mlx4_ib_addr_event(event, event_netdev, ibdev, &gid); 1599 return NOTIFY_DONE; 1600 } 1601 1602 #if IS_ENABLED(CONFIG_IPV6) 1603 static int mlx4_ib_inet6_event(struct notifier_block *this, unsigned long event, 1604 void *ptr) 1605 { 1606 struct mlx4_ib_dev *ibdev; 1607 struct inet6_ifaddr *ifa = ptr; 1608 union ib_gid *gid = (union ib_gid *)&ifa->addr; 1609 struct net_device *event_netdev = ifa->idev->dev; 1610 1611 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb_inet6); 1612 1613 mlx4_ib_addr_event(event, event_netdev, ibdev, gid); 1614 return NOTIFY_DONE; 1615 } 1616 #endif 1617 1618 #define MLX4_IB_INVALID_MAC ((u64)-1) 1619 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev, 1620 struct net_device *dev, 1621 int port) 1622 { 1623 u64 new_smac = 0; 1624 u64 release_mac = MLX4_IB_INVALID_MAC; 1625 struct mlx4_ib_qp *qp; 1626 1627 read_lock(&dev_base_lock); 1628 new_smac = mlx4_mac_to_u64(dev->dev_addr); 1629 read_unlock(&dev_base_lock); 1630 1631 mutex_lock(&ibdev->qp1_proxy_lock[port - 1]); 1632 qp = ibdev->qp1_proxy[port - 1]; 1633 if (qp) { 1634 int new_smac_index; 1635 u64 old_smac = qp->pri.smac; 1636 struct mlx4_update_qp_params update_params; 1637 1638 if (new_smac == old_smac) 1639 goto unlock; 1640 1641 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac); 1642 1643 if (new_smac_index < 0) 1644 goto unlock; 1645 1646 update_params.smac_index = new_smac_index; 1647 if (mlx4_update_qp(ibdev->dev, &qp->mqp, MLX4_UPDATE_QP_SMAC, 1648 &update_params)) { 1649 release_mac = new_smac; 1650 goto unlock; 1651 } 1652 1653 qp->pri.smac = new_smac; 1654 qp->pri.smac_index = new_smac_index; 1655 1656 release_mac = old_smac; 1657 } 1658 1659 unlock: 1660 mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]); 1661 if (release_mac != MLX4_IB_INVALID_MAC) 1662 mlx4_unregister_mac(ibdev->dev, port, release_mac); 1663 } 1664 1665 static void mlx4_ib_get_dev_addr(struct net_device *dev, 1666 struct mlx4_ib_dev *ibdev, u8 port) 1667 { 1668 struct in_device *in_dev; 1669 #if IS_ENABLED(CONFIG_IPV6) 1670 struct inet6_dev *in6_dev; 1671 union ib_gid *pgid; 1672 struct inet6_ifaddr *ifp; 1673 #endif 1674 union ib_gid gid; 1675 1676 1677 if ((port == 0) || (port > ibdev->dev->caps.num_ports)) 1678 return; 1679 1680 /* IPv4 gids */ 1681 in_dev = in_dev_get(dev); 1682 if (in_dev) { 1683 for_ifa(in_dev) { 1684 /*ifa->ifa_address;*/ 1685 ipv6_addr_set_v4mapped(ifa->ifa_address, 1686 (struct in6_addr *)&gid); 1687 update_gid_table(ibdev, port, &gid, 0, 0); 1688 } 1689 endfor_ifa(in_dev); 1690 in_dev_put(in_dev); 1691 } 1692 #if IS_ENABLED(CONFIG_IPV6) 1693 /* IPv6 gids */ 1694 in6_dev = in6_dev_get(dev); 1695 if (in6_dev) { 1696 read_lock_bh(&in6_dev->lock); 1697 list_for_each_entry(ifp, &in6_dev->addr_list, if_list) { 1698 pgid = (union ib_gid *)&ifp->addr; 1699 update_gid_table(ibdev, port, pgid, 0, 0); 1700 } 1701 read_unlock_bh(&in6_dev->lock); 1702 in6_dev_put(in6_dev); 1703 } 1704 #endif 1705 } 1706 1707 static void mlx4_ib_set_default_gid(struct mlx4_ib_dev *ibdev, 1708 struct net_device *dev, u8 port) 1709 { 1710 union ib_gid gid; 1711 mlx4_make_default_gid(dev, &gid); 1712 update_gid_table(ibdev, port, &gid, 0, 1); 1713 } 1714 1715 static int mlx4_ib_init_gid_table(struct mlx4_ib_dev *ibdev) 1716 { 1717 struct net_device *dev; 1718 struct mlx4_ib_iboe *iboe = &ibdev->iboe; 1719 int i; 1720 1721 for (i = 1; i <= ibdev->num_ports; ++i) 1722 if (reset_gid_table(ibdev, i)) 1723 return -1; 1724 1725 read_lock(&dev_base_lock); 1726 spin_lock(&iboe->lock); 1727 1728 for_each_netdev(&init_net, dev) { 1729 u8 port = mlx4_ib_get_dev_port(dev, ibdev); 1730 if (port) 1731 mlx4_ib_get_dev_addr(dev, ibdev, port); 1732 } 1733 1734 spin_unlock(&iboe->lock); 1735 read_unlock(&dev_base_lock); 1736 1737 return 0; 1738 } 1739 1740 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev, 1741 struct net_device *dev, 1742 unsigned long event) 1743 1744 { 1745 struct mlx4_ib_iboe *iboe; 1746 int update_qps_port = -1; 1747 int port; 1748 1749 iboe = &ibdev->iboe; 1750 1751 spin_lock(&iboe->lock); 1752 mlx4_foreach_ib_transport_port(port, ibdev->dev) { 1753 enum ib_port_state port_state = IB_PORT_NOP; 1754 struct net_device *old_master = iboe->masters[port - 1]; 1755 struct net_device *curr_netdev; 1756 struct net_device *curr_master; 1757 1758 iboe->netdevs[port - 1] = 1759 mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port); 1760 if (iboe->netdevs[port - 1]) 1761 mlx4_ib_set_default_gid(ibdev, 1762 iboe->netdevs[port - 1], port); 1763 curr_netdev = iboe->netdevs[port - 1]; 1764 1765 if (iboe->netdevs[port - 1] && 1766 netif_is_bond_slave(iboe->netdevs[port - 1])) { 1767 iboe->masters[port - 1] = netdev_master_upper_dev_get( 1768 iboe->netdevs[port - 1]); 1769 } else { 1770 iboe->masters[port - 1] = NULL; 1771 } 1772 curr_master = iboe->masters[port - 1]; 1773 1774 if (dev == iboe->netdevs[port - 1] && 1775 (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER || 1776 event == NETDEV_UP || event == NETDEV_CHANGE)) 1777 update_qps_port = port; 1778 1779 if (curr_netdev) { 1780 port_state = (netif_running(curr_netdev) && netif_carrier_ok(curr_netdev)) ? 1781 IB_PORT_ACTIVE : IB_PORT_DOWN; 1782 mlx4_ib_set_default_gid(ibdev, curr_netdev, port); 1783 } else { 1784 reset_gid_table(ibdev, port); 1785 } 1786 /* if using bonding/team and a slave port is down, we don't the bond IP 1787 * based gids in the table since flows that select port by gid may get 1788 * the down port. 1789 */ 1790 if (curr_master && (port_state == IB_PORT_DOWN)) { 1791 reset_gid_table(ibdev, port); 1792 mlx4_ib_set_default_gid(ibdev, curr_netdev, port); 1793 } 1794 /* if bonding is used it is possible that we add it to masters 1795 * only after IP address is assigned to the net bonding 1796 * interface. 1797 */ 1798 if (curr_master && (old_master != curr_master)) { 1799 reset_gid_table(ibdev, port); 1800 mlx4_ib_set_default_gid(ibdev, curr_netdev, port); 1801 mlx4_ib_get_dev_addr(curr_master, ibdev, port); 1802 } 1803 1804 if (!curr_master && (old_master != curr_master)) { 1805 reset_gid_table(ibdev, port); 1806 mlx4_ib_set_default_gid(ibdev, curr_netdev, port); 1807 mlx4_ib_get_dev_addr(curr_netdev, ibdev, port); 1808 } 1809 } 1810 1811 spin_unlock(&iboe->lock); 1812 1813 if (update_qps_port > 0) 1814 mlx4_ib_update_qps(ibdev, dev, update_qps_port); 1815 } 1816 1817 static int mlx4_ib_netdev_event(struct notifier_block *this, 1818 unsigned long event, void *ptr) 1819 { 1820 struct net_device *dev = netdev_notifier_info_to_dev(ptr); 1821 struct mlx4_ib_dev *ibdev; 1822 1823 if (!net_eq(dev_net(dev), &init_net)) 1824 return NOTIFY_DONE; 1825 1826 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb); 1827 mlx4_ib_scan_netdevs(ibdev, dev, event); 1828 1829 return NOTIFY_DONE; 1830 } 1831 1832 static void init_pkeys(struct mlx4_ib_dev *ibdev) 1833 { 1834 int port; 1835 int slave; 1836 int i; 1837 1838 if (mlx4_is_master(ibdev->dev)) { 1839 for (slave = 0; slave <= ibdev->dev->num_vfs; ++slave) { 1840 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 1841 for (i = 0; 1842 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 1843 ++i) { 1844 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] = 1845 /* master has the identity virt2phys pkey mapping */ 1846 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i : 1847 ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1; 1848 mlx4_sync_pkey_table(ibdev->dev, slave, port, i, 1849 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]); 1850 } 1851 } 1852 } 1853 /* initialize pkey cache */ 1854 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 1855 for (i = 0; 1856 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 1857 ++i) 1858 ibdev->pkeys.phys_pkey_cache[port-1][i] = 1859 (i) ? 0 : 0xFFFF; 1860 } 1861 } 1862 } 1863 1864 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 1865 { 1866 char name[80]; 1867 int eq_per_port = 0; 1868 int added_eqs = 0; 1869 int total_eqs = 0; 1870 int i, j, eq; 1871 1872 /* Legacy mode or comp_pool is not large enough */ 1873 if (dev->caps.comp_pool == 0 || 1874 dev->caps.num_ports > dev->caps.comp_pool) 1875 return; 1876 1877 eq_per_port = rounddown_pow_of_two(dev->caps.comp_pool/ 1878 dev->caps.num_ports); 1879 1880 /* Init eq table */ 1881 added_eqs = 0; 1882 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 1883 added_eqs += eq_per_port; 1884 1885 total_eqs = dev->caps.num_comp_vectors + added_eqs; 1886 1887 ibdev->eq_table = kzalloc(total_eqs * sizeof(int), GFP_KERNEL); 1888 if (!ibdev->eq_table) 1889 return; 1890 1891 ibdev->eq_added = added_eqs; 1892 1893 eq = 0; 1894 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) { 1895 for (j = 0; j < eq_per_port; j++) { 1896 snprintf(name, sizeof(name), "mlx4-ib-%d-%d@%s", 1897 i, j, dev->pdev->bus->name); 1898 /* Set IRQ for specific name (per ring) */ 1899 if (mlx4_assign_eq(dev, name, NULL, 1900 &ibdev->eq_table[eq])) { 1901 /* Use legacy (same as mlx4_en driver) */ 1902 pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq); 1903 ibdev->eq_table[eq] = 1904 (eq % dev->caps.num_comp_vectors); 1905 } 1906 eq++; 1907 } 1908 } 1909 1910 /* Fill the reset of the vector with legacy EQ */ 1911 for (i = 0, eq = added_eqs; i < dev->caps.num_comp_vectors; i++) 1912 ibdev->eq_table[eq++] = i; 1913 1914 /* Advertise the new number of EQs to clients */ 1915 ibdev->ib_dev.num_comp_vectors = total_eqs; 1916 } 1917 1918 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 1919 { 1920 int i; 1921 1922 /* no additional eqs were added */ 1923 if (!ibdev->eq_table) 1924 return; 1925 1926 /* Reset the advertised EQ number */ 1927 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; 1928 1929 /* Free only the added eqs */ 1930 for (i = 0; i < ibdev->eq_added; i++) { 1931 /* Don't free legacy eqs if used */ 1932 if (ibdev->eq_table[i] <= dev->caps.num_comp_vectors) 1933 continue; 1934 mlx4_release_eq(dev, ibdev->eq_table[i]); 1935 } 1936 1937 kfree(ibdev->eq_table); 1938 } 1939 1940 static void *mlx4_ib_add(struct mlx4_dev *dev) 1941 { 1942 struct mlx4_ib_dev *ibdev; 1943 int num_ports = 0; 1944 int i, j; 1945 int err; 1946 struct mlx4_ib_iboe *iboe; 1947 int ib_num_ports = 0; 1948 1949 pr_info_once("%s", mlx4_ib_version); 1950 1951 num_ports = 0; 1952 mlx4_foreach_ib_transport_port(i, dev) 1953 num_ports++; 1954 1955 /* No point in registering a device with no ports... */ 1956 if (num_ports == 0) 1957 return NULL; 1958 1959 ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev); 1960 if (!ibdev) { 1961 dev_err(&dev->pdev->dev, "Device struct alloc failed\n"); 1962 return NULL; 1963 } 1964 1965 iboe = &ibdev->iboe; 1966 1967 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn)) 1968 goto err_dealloc; 1969 1970 if (mlx4_uar_alloc(dev, &ibdev->priv_uar)) 1971 goto err_pd; 1972 1973 ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT, 1974 PAGE_SIZE); 1975 if (!ibdev->uar_map) 1976 goto err_uar; 1977 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock); 1978 1979 ibdev->dev = dev; 1980 1981 strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX); 1982 ibdev->ib_dev.owner = THIS_MODULE; 1983 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA; 1984 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey; 1985 ibdev->num_ports = num_ports; 1986 ibdev->ib_dev.phys_port_cnt = ibdev->num_ports; 1987 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; 1988 ibdev->ib_dev.dma_device = &dev->pdev->dev; 1989 1990 if (dev->caps.userspace_caps) 1991 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION; 1992 else 1993 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION; 1994 1995 ibdev->ib_dev.uverbs_cmd_mask = 1996 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 1997 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 1998 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 1999 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 2000 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 2001 (1ull << IB_USER_VERBS_CMD_REG_MR) | 2002 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 2003 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 2004 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 2005 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 2006 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 2007 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 2008 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 2009 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 2010 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 2011 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 2012 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | 2013 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 2014 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 2015 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 2016 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | 2017 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) | 2018 (1ull << IB_USER_VERBS_CMD_OPEN_QP); 2019 2020 ibdev->ib_dev.query_device = mlx4_ib_query_device; 2021 ibdev->ib_dev.query_port = mlx4_ib_query_port; 2022 ibdev->ib_dev.get_link_layer = mlx4_ib_port_link_layer; 2023 ibdev->ib_dev.query_gid = mlx4_ib_query_gid; 2024 ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey; 2025 ibdev->ib_dev.modify_device = mlx4_ib_modify_device; 2026 ibdev->ib_dev.modify_port = mlx4_ib_modify_port; 2027 ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext; 2028 ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext; 2029 ibdev->ib_dev.mmap = mlx4_ib_mmap; 2030 ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd; 2031 ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd; 2032 ibdev->ib_dev.create_ah = mlx4_ib_create_ah; 2033 ibdev->ib_dev.query_ah = mlx4_ib_query_ah; 2034 ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah; 2035 ibdev->ib_dev.create_srq = mlx4_ib_create_srq; 2036 ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq; 2037 ibdev->ib_dev.query_srq = mlx4_ib_query_srq; 2038 ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq; 2039 ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv; 2040 ibdev->ib_dev.create_qp = mlx4_ib_create_qp; 2041 ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp; 2042 ibdev->ib_dev.query_qp = mlx4_ib_query_qp; 2043 ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp; 2044 ibdev->ib_dev.post_send = mlx4_ib_post_send; 2045 ibdev->ib_dev.post_recv = mlx4_ib_post_recv; 2046 ibdev->ib_dev.create_cq = mlx4_ib_create_cq; 2047 ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq; 2048 ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq; 2049 ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq; 2050 ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq; 2051 ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq; 2052 ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr; 2053 ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr; 2054 ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr; 2055 ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr; 2056 ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list; 2057 ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list; 2058 ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach; 2059 ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach; 2060 ibdev->ib_dev.process_mad = mlx4_ib_process_mad; 2061 2062 if (!mlx4_is_slave(ibdev->dev)) { 2063 ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc; 2064 ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr; 2065 ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr; 2066 ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc; 2067 } 2068 2069 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW || 2070 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) { 2071 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw; 2072 ibdev->ib_dev.bind_mw = mlx4_ib_bind_mw; 2073 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw; 2074 2075 ibdev->ib_dev.uverbs_cmd_mask |= 2076 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) | 2077 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW); 2078 } 2079 2080 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) { 2081 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd; 2082 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd; 2083 ibdev->ib_dev.uverbs_cmd_mask |= 2084 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) | 2085 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD); 2086 } 2087 2088 if (check_flow_steering_support(dev)) { 2089 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED; 2090 ibdev->ib_dev.create_flow = mlx4_ib_create_flow; 2091 ibdev->ib_dev.destroy_flow = mlx4_ib_destroy_flow; 2092 2093 ibdev->ib_dev.uverbs_ex_cmd_mask |= 2094 (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) | 2095 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW); 2096 } 2097 2098 mlx4_ib_alloc_eqs(dev, ibdev); 2099 2100 spin_lock_init(&iboe->lock); 2101 2102 if (init_node_data(ibdev)) 2103 goto err_map; 2104 2105 for (i = 0; i < ibdev->num_ports; ++i) { 2106 mutex_init(&ibdev->qp1_proxy_lock[i]); 2107 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) == 2108 IB_LINK_LAYER_ETHERNET) { 2109 err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]); 2110 if (err) 2111 ibdev->counters[i] = -1; 2112 } else { 2113 ibdev->counters[i] = -1; 2114 } 2115 } 2116 2117 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 2118 ib_num_ports++; 2119 2120 spin_lock_init(&ibdev->sm_lock); 2121 mutex_init(&ibdev->cap_mask_mutex); 2122 2123 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED && 2124 ib_num_ports) { 2125 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS; 2126 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count, 2127 MLX4_IB_UC_STEER_QPN_ALIGN, 2128 &ibdev->steer_qpn_base); 2129 if (err) 2130 goto err_counter; 2131 2132 ibdev->ib_uc_qpns_bitmap = 2133 kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) * 2134 sizeof(long), 2135 GFP_KERNEL); 2136 if (!ibdev->ib_uc_qpns_bitmap) { 2137 dev_err(&dev->pdev->dev, "bit map alloc failed\n"); 2138 goto err_steer_qp_release; 2139 } 2140 2141 bitmap_zero(ibdev->ib_uc_qpns_bitmap, ibdev->steer_qpn_count); 2142 2143 err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE( 2144 dev, ibdev->steer_qpn_base, 2145 ibdev->steer_qpn_base + 2146 ibdev->steer_qpn_count - 1); 2147 if (err) 2148 goto err_steer_free_bitmap; 2149 } 2150 2151 if (ib_register_device(&ibdev->ib_dev, NULL)) 2152 goto err_steer_free_bitmap; 2153 2154 if (mlx4_ib_mad_init(ibdev)) 2155 goto err_reg; 2156 2157 if (mlx4_ib_init_sriov(ibdev)) 2158 goto err_mad; 2159 2160 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE) { 2161 if (!iboe->nb.notifier_call) { 2162 iboe->nb.notifier_call = mlx4_ib_netdev_event; 2163 err = register_netdevice_notifier(&iboe->nb); 2164 if (err) { 2165 iboe->nb.notifier_call = NULL; 2166 goto err_notif; 2167 } 2168 } 2169 if (!iboe->nb_inet.notifier_call) { 2170 iboe->nb_inet.notifier_call = mlx4_ib_inet_event; 2171 err = register_inetaddr_notifier(&iboe->nb_inet); 2172 if (err) { 2173 iboe->nb_inet.notifier_call = NULL; 2174 goto err_notif; 2175 } 2176 } 2177 #if IS_ENABLED(CONFIG_IPV6) 2178 if (!iboe->nb_inet6.notifier_call) { 2179 iboe->nb_inet6.notifier_call = mlx4_ib_inet6_event; 2180 err = register_inet6addr_notifier(&iboe->nb_inet6); 2181 if (err) { 2182 iboe->nb_inet6.notifier_call = NULL; 2183 goto err_notif; 2184 } 2185 } 2186 #endif 2187 for (i = 1 ; i <= ibdev->num_ports ; ++i) 2188 reset_gid_table(ibdev, i); 2189 rtnl_lock(); 2190 mlx4_ib_scan_netdevs(ibdev, NULL, 0); 2191 rtnl_unlock(); 2192 mlx4_ib_init_gid_table(ibdev); 2193 } 2194 2195 for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) { 2196 if (device_create_file(&ibdev->ib_dev.dev, 2197 mlx4_class_attributes[j])) 2198 goto err_notif; 2199 } 2200 2201 ibdev->ib_active = true; 2202 2203 if (mlx4_is_mfunc(ibdev->dev)) 2204 init_pkeys(ibdev); 2205 2206 /* create paravirt contexts for any VFs which are active */ 2207 if (mlx4_is_master(ibdev->dev)) { 2208 for (j = 0; j < MLX4_MFUNC_MAX; j++) { 2209 if (j == mlx4_master_func_num(ibdev->dev)) 2210 continue; 2211 if (mlx4_is_slave_active(ibdev->dev, j)) 2212 do_slave_init(ibdev, j, 1); 2213 } 2214 } 2215 return ibdev; 2216 2217 err_notif: 2218 if (ibdev->iboe.nb.notifier_call) { 2219 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 2220 pr_warn("failure unregistering notifier\n"); 2221 ibdev->iboe.nb.notifier_call = NULL; 2222 } 2223 if (ibdev->iboe.nb_inet.notifier_call) { 2224 if (unregister_inetaddr_notifier(&ibdev->iboe.nb_inet)) 2225 pr_warn("failure unregistering notifier\n"); 2226 ibdev->iboe.nb_inet.notifier_call = NULL; 2227 } 2228 #if IS_ENABLED(CONFIG_IPV6) 2229 if (ibdev->iboe.nb_inet6.notifier_call) { 2230 if (unregister_inet6addr_notifier(&ibdev->iboe.nb_inet6)) 2231 pr_warn("failure unregistering notifier\n"); 2232 ibdev->iboe.nb_inet6.notifier_call = NULL; 2233 } 2234 #endif 2235 flush_workqueue(wq); 2236 2237 mlx4_ib_close_sriov(ibdev); 2238 2239 err_mad: 2240 mlx4_ib_mad_cleanup(ibdev); 2241 2242 err_reg: 2243 ib_unregister_device(&ibdev->ib_dev); 2244 2245 err_steer_free_bitmap: 2246 kfree(ibdev->ib_uc_qpns_bitmap); 2247 2248 err_steer_qp_release: 2249 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) 2250 mlx4_qp_release_range(dev, ibdev->steer_qpn_base, 2251 ibdev->steer_qpn_count); 2252 err_counter: 2253 for (; i; --i) 2254 if (ibdev->counters[i - 1] != -1) 2255 mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]); 2256 2257 err_map: 2258 iounmap(ibdev->uar_map); 2259 2260 err_uar: 2261 mlx4_uar_free(dev, &ibdev->priv_uar); 2262 2263 err_pd: 2264 mlx4_pd_free(dev, ibdev->priv_pdn); 2265 2266 err_dealloc: 2267 ib_dealloc_device(&ibdev->ib_dev); 2268 2269 return NULL; 2270 } 2271 2272 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn) 2273 { 2274 int offset; 2275 2276 WARN_ON(!dev->ib_uc_qpns_bitmap); 2277 2278 offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap, 2279 dev->steer_qpn_count, 2280 get_count_order(count)); 2281 if (offset < 0) 2282 return offset; 2283 2284 *qpn = dev->steer_qpn_base + offset; 2285 return 0; 2286 } 2287 2288 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count) 2289 { 2290 if (!qpn || 2291 dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED) 2292 return; 2293 2294 BUG_ON(qpn < dev->steer_qpn_base); 2295 2296 bitmap_release_region(dev->ib_uc_qpns_bitmap, 2297 qpn - dev->steer_qpn_base, 2298 get_count_order(count)); 2299 } 2300 2301 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 2302 int is_attach) 2303 { 2304 int err; 2305 size_t flow_size; 2306 struct ib_flow_attr *flow = NULL; 2307 struct ib_flow_spec_ib *ib_spec; 2308 2309 if (is_attach) { 2310 flow_size = sizeof(struct ib_flow_attr) + 2311 sizeof(struct ib_flow_spec_ib); 2312 flow = kzalloc(flow_size, GFP_KERNEL); 2313 if (!flow) 2314 return -ENOMEM; 2315 flow->port = mqp->port; 2316 flow->num_of_specs = 1; 2317 flow->size = flow_size; 2318 ib_spec = (struct ib_flow_spec_ib *)(flow + 1); 2319 ib_spec->type = IB_FLOW_SPEC_IB; 2320 ib_spec->size = sizeof(struct ib_flow_spec_ib); 2321 /* Add an empty rule for IB L2 */ 2322 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask)); 2323 2324 err = __mlx4_ib_create_flow(&mqp->ibqp, flow, 2325 IB_FLOW_DOMAIN_NIC, 2326 MLX4_FS_REGULAR, 2327 &mqp->reg_id); 2328 } else { 2329 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id); 2330 } 2331 kfree(flow); 2332 return err; 2333 } 2334 2335 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr) 2336 { 2337 struct mlx4_ib_dev *ibdev = ibdev_ptr; 2338 int p; 2339 2340 mlx4_ib_close_sriov(ibdev); 2341 mlx4_ib_mad_cleanup(ibdev); 2342 ib_unregister_device(&ibdev->ib_dev); 2343 if (ibdev->iboe.nb.notifier_call) { 2344 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 2345 pr_warn("failure unregistering notifier\n"); 2346 ibdev->iboe.nb.notifier_call = NULL; 2347 } 2348 2349 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) { 2350 mlx4_qp_release_range(dev, ibdev->steer_qpn_base, 2351 ibdev->steer_qpn_count); 2352 kfree(ibdev->ib_uc_qpns_bitmap); 2353 } 2354 2355 if (ibdev->iboe.nb_inet.notifier_call) { 2356 if (unregister_inetaddr_notifier(&ibdev->iboe.nb_inet)) 2357 pr_warn("failure unregistering notifier\n"); 2358 ibdev->iboe.nb_inet.notifier_call = NULL; 2359 } 2360 #if IS_ENABLED(CONFIG_IPV6) 2361 if (ibdev->iboe.nb_inet6.notifier_call) { 2362 if (unregister_inet6addr_notifier(&ibdev->iboe.nb_inet6)) 2363 pr_warn("failure unregistering notifier\n"); 2364 ibdev->iboe.nb_inet6.notifier_call = NULL; 2365 } 2366 #endif 2367 2368 iounmap(ibdev->uar_map); 2369 for (p = 0; p < ibdev->num_ports; ++p) 2370 if (ibdev->counters[p] != -1) 2371 mlx4_counter_free(ibdev->dev, ibdev->counters[p]); 2372 mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB) 2373 mlx4_CLOSE_PORT(dev, p); 2374 2375 mlx4_ib_free_eqs(dev, ibdev); 2376 2377 mlx4_uar_free(dev, &ibdev->priv_uar); 2378 mlx4_pd_free(dev, ibdev->priv_pdn); 2379 ib_dealloc_device(&ibdev->ib_dev); 2380 } 2381 2382 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init) 2383 { 2384 struct mlx4_ib_demux_work **dm = NULL; 2385 struct mlx4_dev *dev = ibdev->dev; 2386 int i; 2387 unsigned long flags; 2388 struct mlx4_active_ports actv_ports; 2389 unsigned int ports; 2390 unsigned int first_port; 2391 2392 if (!mlx4_is_master(dev)) 2393 return; 2394 2395 actv_ports = mlx4_get_active_ports(dev, slave); 2396 ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports); 2397 first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports); 2398 2399 dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC); 2400 if (!dm) { 2401 pr_err("failed to allocate memory for tunneling qp update\n"); 2402 goto out; 2403 } 2404 2405 for (i = 0; i < ports; i++) { 2406 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC); 2407 if (!dm[i]) { 2408 pr_err("failed to allocate memory for tunneling qp update work struct\n"); 2409 for (i = 0; i < dev->caps.num_ports; i++) { 2410 if (dm[i]) 2411 kfree(dm[i]); 2412 } 2413 goto out; 2414 } 2415 } 2416 /* initialize or tear down tunnel QPs for the slave */ 2417 for (i = 0; i < ports; i++) { 2418 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work); 2419 dm[i]->port = first_port + i + 1; 2420 dm[i]->slave = slave; 2421 dm[i]->do_init = do_init; 2422 dm[i]->dev = ibdev; 2423 spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags); 2424 if (!ibdev->sriov.is_going_down) 2425 queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work); 2426 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags); 2427 } 2428 out: 2429 kfree(dm); 2430 return; 2431 } 2432 2433 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr, 2434 enum mlx4_dev_event event, unsigned long param) 2435 { 2436 struct ib_event ibev; 2437 struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr); 2438 struct mlx4_eqe *eqe = NULL; 2439 struct ib_event_work *ew; 2440 int p = 0; 2441 2442 if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE) 2443 eqe = (struct mlx4_eqe *)param; 2444 else 2445 p = (int) param; 2446 2447 switch (event) { 2448 case MLX4_DEV_EVENT_PORT_UP: 2449 if (p > ibdev->num_ports) 2450 return; 2451 if (mlx4_is_master(dev) && 2452 rdma_port_get_link_layer(&ibdev->ib_dev, p) == 2453 IB_LINK_LAYER_INFINIBAND) { 2454 mlx4_ib_invalidate_all_guid_record(ibdev, p); 2455 } 2456 ibev.event = IB_EVENT_PORT_ACTIVE; 2457 break; 2458 2459 case MLX4_DEV_EVENT_PORT_DOWN: 2460 if (p > ibdev->num_ports) 2461 return; 2462 ibev.event = IB_EVENT_PORT_ERR; 2463 break; 2464 2465 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR: 2466 ibdev->ib_active = false; 2467 ibev.event = IB_EVENT_DEVICE_FATAL; 2468 break; 2469 2470 case MLX4_DEV_EVENT_PORT_MGMT_CHANGE: 2471 ew = kmalloc(sizeof *ew, GFP_ATOMIC); 2472 if (!ew) { 2473 pr_err("failed to allocate memory for events work\n"); 2474 break; 2475 } 2476 2477 INIT_WORK(&ew->work, handle_port_mgmt_change_event); 2478 memcpy(&ew->ib_eqe, eqe, sizeof *eqe); 2479 ew->ib_dev = ibdev; 2480 /* need to queue only for port owner, which uses GEN_EQE */ 2481 if (mlx4_is_master(dev)) 2482 queue_work(wq, &ew->work); 2483 else 2484 handle_port_mgmt_change_event(&ew->work); 2485 return; 2486 2487 case MLX4_DEV_EVENT_SLAVE_INIT: 2488 /* here, p is the slave id */ 2489 do_slave_init(ibdev, p, 1); 2490 return; 2491 2492 case MLX4_DEV_EVENT_SLAVE_SHUTDOWN: 2493 /* here, p is the slave id */ 2494 do_slave_init(ibdev, p, 0); 2495 return; 2496 2497 default: 2498 return; 2499 } 2500 2501 ibev.device = ibdev_ptr; 2502 ibev.element.port_num = (u8) p; 2503 2504 ib_dispatch_event(&ibev); 2505 } 2506 2507 static struct mlx4_interface mlx4_ib_interface = { 2508 .add = mlx4_ib_add, 2509 .remove = mlx4_ib_remove, 2510 .event = mlx4_ib_event, 2511 .protocol = MLX4_PROT_IB_IPV6 2512 }; 2513 2514 static int __init mlx4_ib_init(void) 2515 { 2516 int err; 2517 2518 wq = create_singlethread_workqueue("mlx4_ib"); 2519 if (!wq) 2520 return -ENOMEM; 2521 2522 err = mlx4_ib_mcg_init(); 2523 if (err) 2524 goto clean_wq; 2525 2526 err = mlx4_register_interface(&mlx4_ib_interface); 2527 if (err) 2528 goto clean_mcg; 2529 2530 return 0; 2531 2532 clean_mcg: 2533 mlx4_ib_mcg_destroy(); 2534 2535 clean_wq: 2536 destroy_workqueue(wq); 2537 return err; 2538 } 2539 2540 static void __exit mlx4_ib_cleanup(void) 2541 { 2542 mlx4_unregister_interface(&mlx4_ib_interface); 2543 mlx4_ib_mcg_destroy(); 2544 destroy_workqueue(wq); 2545 } 2546 2547 module_init(mlx4_ib_init); 2548 module_exit(mlx4_ib_cleanup); 2549